C++

86,731 students

80 contributors

86,715
students have developed their C++ skills on Exercism.

Students

86,715

Submissions

597,019

Mentoring Discussions

10,776

The C++ track needs attention ⚠️

Building

Build

Use your knowledge to build the C++ track itself

80 contributors

Build Test Runners

Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Usage statistics

Total Test Runner Runs

546,881

Test Run Pass Rate

17.6% (96477)

Test Run Fail Rate

18.0% (98303)

Test Run Error Rate

64.4% (352101)

Build Analyzers

Build an Analyzer for C++: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.

Build Representers

Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Next goal: Build a Representer. Find out more.

Create Practice Exercises

Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Next goal: Implement 132 practice exercises. Find out more.

Usage statistics

60 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

54,130

146,744 (avg. 2.7)

27,174 (50.2%)

12 (0.0%)

Leap

19,683

77,444 (avg. 3.9)

9,249 (47.0%)

2,462 (12.5%)

Reverse String

10,295

64,582 (avg. 6.3)

5,971 (58.0%)

1,440 (14.0%)

Space Age

5,842

45,288 (avg. 7.8)

3,039 (52.0%)

1,092 (18.7%)

Triangle

3,874

28,556 (avg. 7.4)

2,394 (61.8%)

740 (19.1%)

Grains

2,701

17,520 (avg. 6.5)

2,178 (80.6%)

580 (21.5%)

Raindrops

2,240

9,313 (avg. 4.2)

1,958 (87.4%)

492 (22.0%)

Pangram

2,073

14,875 (avg. 7.2)

1,672 (80.7%)

465 (22.4%)

Two Fer

1,936

7,862 (avg. 4.1)

1,605 (82.9%)

77 (4.0%)

Grade School

2,309

17,332 (avg. 7.5)

1,493 (64.7%)

203 (8.8%)

Hamming

3,910

9,686 (avg. 2.5)

3,148 (80.5%)

352 (9.0%)

Nucleotide Count

2,468

12,482 (avg. 5.1)

1,746 (70.7%)

269 (10.9%)

RNA Transcription

1,730

7,287 (avg. 4.2)

1,424 (82.3%)

161 (9.3%)

Collatz Conjecture

1,275

5,789 (avg. 4.5)

1,059 (83.1%)

47 (3.7%)

Difference of Squares

2,066

4,821 (avg. 2.3)

1,732 (83.8%)

157 (7.6%)

Nth Prime

1,464

8,612 (avg. 5.9)

958 (65.4%)

115 (7.9%)

Queen Attack

1,210

7,762 (avg. 6.4)

793 (65.5%)

90 (7.4%)

Sieve

1,135

4,545 (avg. 4.0)

859 (75.7%)

105 (9.3%)

Say

1,108

7,346 (avg. 6.6)

575 (51.9%)

100 (9.0%)

Gigasecond

2,371

4,068 (avg. 1.7)

1,587 (66.9%)

251 (10.6%)

Secret Handshake

716

3,206 (avg. 4.5)

565 (78.9%)

35 (4.9%)

Allergies

840

3,789 (avg. 4.5)

598 (71.2%)

44 (5.2%)

Protein Translation

639

3,053 (avg. 4.8)

507 (79.3%)

33 (5.2%)

Sum of Multiples

1,142

3,635 (avg. 3.2)

858 (75.1%)

65 (5.7%)

Prime Factors

837

2,223 (avg. 2.7)

635 (75.9%)

44 (5.3%)

Robot Name

1,079

4,715 (avg. 4.4)

739 (68.5%)

95 (8.8%)

Clock

724

2,483 (avg. 3.4)

401 (55.4%)

38 (5.2%)

Meetup

583

904 (avg. 1.6)

311 (53.3%)

20 (3.4%)

Beer Song

635

2,829 (avg. 4.5)

472 (74.3%)

31 (4.9%)

Atbash Cipher

607

4,286 (avg. 7.1)

444 (73.1%)

30 (4.9%)

Trinary

710

2,162 (avg. 3.0)

594 (83.7%)

19 (2.7%)

Binary Search

681

3,812 (avg. 5.6)

457 (67.1%)

31 (4.6%)

Phone Number

752

2,228 (avg. 3.0)

538 (71.5%)

35 (4.7%)

Series

501

1,824 (avg. 3.6)

374 (74.7%)

18 (3.6%)

Complex Numbers

585

2,358 (avg. 4.0)

383 (65.5%)

16 (2.7%)

Food Chain

733

1,433 (avg. 2.0)

520 (70.9%)

26 (3.5%)

Roman Numerals

555

1,639 (avg. 3.0)

396 (71.4%)

18 (3.2%)

Bob

1,979

4,508 (avg. 2.3)

1,648 (83.3%)

233 (11.8%)

Word Count

1,139

2,917 (avg. 2.6)

873 (76.6%)

83 (7.3%)

Circular Buffer

480

2,808 (avg. 5.9)

272 (56.7%)

33 (6.9%)

Crypto Square

462

2,050 (avg. 4.4)

298 (64.5%)

13 (2.8%)

ETL

1,061

1,889 (avg. 1.8)

861 (81.1%)

39 (3.7%)

Matching Brackets

583

2,360 (avg. 4.0)

423 (72.6%)

25 (4.3%)

Anagram

1,308

2,890 (avg. 2.2)

1,018 (77.8%)

89 (6.8%)

Binary Search Tree

720

2,482 (avg. 3.4)

204 (28.3%)

28 (3.9%)

Luhn

530

2,885 (avg. 5.4)

388 (73.2%)

29 (5.5%)

Acronym

599

2,152 (avg. 3.6)

443 (74.0%)

26 (4.3%)

Armstrong Numbers

589

1,918 (avg. 3.3)

467 (79.3%)

22 (3.7%)

Binary

868

2,608 (avg. 3.0)

677 (78.0%)

78 (9.0%)

Hexadecimal

656

1,679 (avg. 2.6)

496 (75.6%)

60 (9.1%)

Isogram

2,114

3,253 (avg. 1.5)

1,274 (60.3%)

91 (4.3%)

Pascal's Triangle

545

1,623 (avg. 3.0)

404 (74.1%)

22 (4.0%)

Scrabble Score

899

2,163 (avg. 2.4)

653 (72.6%)

83 (9.2%)

All Your Base

521

1,562 (avg. 3.0)

324 (62.2%)

38 (7.3%)

Robot Simulator

897

2,723 (avg. 3.0)

476 (53.1%)

45 (5.0%)

Bank Account

227

824 (avg. 3.6)

97 (42.7%)

17 (7.5%)

Darts

150

606 (avg. 4.0)

113 (75.3%)

5 (3.3%)

Largest Series Product

91

525 (avg. 5.8)

65 (71.4%)

3 (3.3%)

Isbn Verifier

171

1,140 (avg. 6.7)

111 (64.9%)

6 (3.5%)

Simple linked list

127

924 (avg. 7.3)

64 (50.4%)

5 (3.9%)

72 unimplemented practice exercises

Affine Cipher

Alphametics

Book Store

Bottle Song

Bowling

Change

Connect

Custom Set

D&D Character

DOT DSL

Diamond

Dominoes

Error Handling

Flatten Array

Forth

Go Counting

Grep

Hangman

High Scores

House

Killer Sudoku Helper

Kindergarten Garden

Knapsack

Ledger

Lens Person

Linked List

List Ops

Markdown

Matrix

Micro Blog

Minesweeper

OCR Numbers

POV

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Perfect Numbers

Pig Latin

Poker

Proverb

Pythagorean Triplet

REST API

Rail Fence Cipher

Rational Numbers

React

Rectangles

Resistor Color

Resistor Color Duo

Resistor Color Trio

Rotational Cipher

Run-Length Encoding

SGF Parsing

Saddle Points

Satellite

Scale Generator

Simple Cipher

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Strain

Sublist

Tournament

Transpose

Tree Building

Twelve Days

Two Bucket

Variable Length Quantity

Word Search

Wordy

Yacht

Zebra Puzzle

Zipper

1 foregone practice exercise

Point Mutations

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